Patent GB-673687-A (GB)
Title: Improvements in or relating to ice cream machinery
IPC: A23G9/24
Filed: 1949-07-12
Abstract: 673,687. Cutting and coating ice cream. ROLFE, A. F. B. Oct. 21, 1949 [July 12, 1949], No. 18400/49. Classes 28 (i) and 28 (ii). In automatically cutting off slabs of ice cream from a block and dipping them in chocolate all the movements of the machine, such as the stepby-step feed of the block to a reciprocated guillotine, the picking up of the cut off slab, dipping it, and stripping it from its holder, are derived from the reciprocating motion of the guillotine. The slabs which are cut off by the guillotine 4 are stabbed by forks 38 at the ends of radial arms 37 of a turret which is rotated step by step. The slabs when being carried round are dipped down into a chocolate containing pan, raised to drain and then pulled off the forks by a stripper 60. The guillotine 4 is reciprocated from a crank pin 5. Slice thickness.-The block on a shelf 24 is pushed along step-by-step by a pusher 23 removably placed on the top run of an endless chain, the sprocket 21 of which is rotated intermittently through a one way clutch by a rack and pinion 14, 17 the rack 14 being slid sideways intermittently by a ball 13 or a cam of a lever 11 secured on a shaft 7 rocked by a lever 8 engaged in a slot in the reciprocated frame of the guillotine. The rack 14 is returned by a spring 15. The amount of this movement is varied by a screw 12 which adjusts the effective length of the lever 11 and so sets the slice thickness of the slab cut off. The machine is stopped when the pusher 23 engages an end switch 25 of the motor. The shelf 24 supporting the block is tilted towards the back so that each cut-off slab is inclined on the fork whereby subsequent drainage of surplus coating from its lowest edge is facilitated. The turret 30 is rotated step by step from the same rocked shaft 7 through a link 33 and crank 34 and a one way'coupling 35. The turret supports the radial carrying arms 37 in brackets 29 the arms being movable endways by means of their slots 39. The fork 38, Fig. 4, is pushed into the slab by the top end of a lever 48 sliding a depending projection 41 of each radial arm 37 when the lever 48 is rocked about 49 by a link 47 coupled to a bent lever 45 pivoted on 7 and depressed by a rod 44 on and reciprocated by the guillotine. The slab is dipped by a bent lever 46, Fig. 5, fixed on the rocked shaft 7, such lever pushing up the part 41 of the radial arm 37 whereby it pivots in its turret slot to lower the slab. The dipping pan 51 is replenished from an adjacent reservoir 52 through a hand operated gate 53 with registering ports. The gate may operate a switch 57, Fig. 2 (not shown), to start the drive motor. The pan may have a warm water jacket. In stripping the block from the fork 38 the inner ends of each arm 37.pass beyond the outward pushing stationary cam 50 so that the fork is suddenly retracted by its spring whereby stripping is effected against the fixed stripper 60. The forks 38 are easily removable from their arms for sterilization. A pad with germicide may be located in the path of their movement. Specification 673,730 is disclaimed.